vanished

• All shear stresses must vanish .
  所有的切应力都必须等于零。
• Many kinds of animals have vanished from the earth ..
  许多动物已从地球上消失了。
• He seemed to vanish into thin air .
  他不留痕迹地消失了。
• Her gentle, fragile beauty had not entirely vanished .
  她那娇弱的风韵还尚未失尽。
• They had vanished in the crowd .
  他们已消失在人群中。
• All her imaginary happiness vanished in a moment .
  顷刻间她幻想的全部幸福都成了泡影。
• But the bending moment at the central hinge must vanish .
  但在中间铰处，弯矩必定为零。
• She pitched forward and vanished among the shrubs .
  她向前跌去，然后就消失在灌木丛中。
• Paul and the boy vanished .
  保罗和那年轻人走了。
• At equilibrium the resultant of all external forces vanish .
  在平衡时，所有外力的合力为零。